13 speed ticking noise, only in 4th, 8th and 8th over?

Just today my transmission decided to start making a suspicious noise only in 4th, 8th and 8th over. It’s hard to describe, but kind of like a light metallic knock. Happens under all conditions only in that gear. It tap faster, or slower with the truck speed. Kind of sounds like when you’re trying to get into gear with light pressure on the shifter before the clutch brake stops the trans all the way. It’s pretty faint, but it can be heard with the radio on. If you move the shifter just right you can’t hear it. I’ve also noticed that slowing down in 4th it is much louder especially with the jake on. There’s no metal on the magnetic fill plug, the fluid looks great, and it’s not running hot. Any ideas? I assume with my luck the trans is trying to tell me it’s ready to leave me stranded. Thought maybe there’s an adjustment on the shifter that’s causing it to over extend into high gear, or something simple. Like I said it just started this morning. Nothing out of the ordinary happened yesterday to make me think it got damaged.

 

You mean pulling hard on the shifter, or hard as in heavy weight? I’d say neither.

 

I’m getting a noise that just developed Wednesday only in 4th, 8th and 8th high of my Eaton 13 speed. You can hear it in 4th of my video. It’s pretty constant, but seems worse when slowing down in 4th. I don’t know if any abuse I did to cause it other than old age whatever it is. Would you suggest I get the trans replaced immediately, or something that can last awhile?

Here’s a video you can hear it pretty good. Usually worse when slowing down. This was in 4th gear since in 8th the road noise makes it too hard for the phone to pick it up.

 

That’s what I’m afraid of, driving hundreds of miles in 7th at 55. Or having a catastrophic failure then needing a tow.

 

It springs back